[
  {"op": "c", "db": "load3_db", "id": 1, "dc": {"create":  "coll_txn"}},
  {"op": "t", "db": "load3_db", "id": 2, "dc": [
    {"id": 21, "op": "c", "db": "load3_db", "dc": {"insert": "coll_txn", "documents": [{"key1": "i1_t1"}]}},
    {"id": 22, "op": "c", "db": "load3_db", "dc": {"insert": "coll_txn", "documents": [{"key1": "i2_t1", "key2": "i2_t1"}, {"key1": "i2_t1", "key2": "i2_t1", "key3": "i2_t1"}]}},
    {"id": 23, "op": "abort"}
  ]},
  {"op": "t", "db": "load3_db", "id": 3, "dc": [
    {"id": 31, "op": "c", "db": "load3_db", "dc": {"insert": "coll_txn", "documents": [{"key2": "i1_t2"}]}},
    {"id": 32, "op": "c", "db": "load3_db", "dc": {"insert": "coll_txn", "documents": [{"key5": "i2_t2"}, {"key1": "i2_t2", "key3": "i2_t2"}]}}
  ]}
]
